TNW reports Canadian ISP Rogers admitted to throttling World of Warcraft when contacted by the Canadian Radio-television and Telecommunications Commission.

In its defence, the company apologised for the inconvenience and blamed recent updates to the game’s client.

The problem is said to occur when playing WoW and using peer-to-peer sharing services – such as Blizzard’s update system, which must be manually disabled in client to avoid the issue.

Rogers said it is working with Blizzard on a fix.

Throttling data speeds at the ISP’s discrimination does not breach any Canadian regulations, although the CRTC has asked Rogers to make its policies in this regard publicly available, as is required in many territories.

Online gamers regularly rage against lag caused by slow connection speeds. Rogers is one of the largest ISPs in Canada.